linux-kernel - rfkill switch state during suspend?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Date:	Wed, 9 Jun 2010 15:45:23 +0530 (IST)
From:	Pavan Savoy <pavan_savoy@...oo.co.in>
To:	Johannes Berg <johannes@...solutions.net>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
Cc:	linux-kernel@...r.kernel.org
Subject: rfkill switch state during suspend?

Hi,

I remember in 2.6.29, the rfkill switch state during suspend was set to SOFT_BLOCKED by calling the toggle_radio of rfkill drivers.

What happens now ? 2.6.32+ ... ?

This previously posed a problems to drivers which mapped their chip enable GPIOs to the rfkill entries, because on suspend, the gpio was pulled low because of the SOFT_BLOCKED state.

A couple of lines regarding same in Documentation/rfkill.txt would be ideal too.

Thanks in advance.
Pavan Savoy.


--- On Fri, 26/3/10, Dmitry Torokhov <dmitry.torokhov@...il.com> wrote:

> From: Dmitry Torokhov <dmitry.torokhov@...il.com>
> Subject: Re: [PATCH] rfkill: core: add custom rfkill switch
> To: "Johannes Berg" <johannes@...solutions.net>
> Cc: "Pavan Savoy" <pavan_savoy@...oo.co.in>
> Date: Friday, 26 March, 2010, 12:28 PM
> On Thu, Mar 25, 2010 at 11:39:10PM
> -0700, Johannes Berg wrote:
> > On Thu, 2010-03-25 at 23:23 -0700, Dmitry Torokhov
> wrote:
> > 
> > > > I do have an actual driver it's just that
> all 3 cores are controlled
> > > > by 1 chip_enable and individual cores are
> powered up down by s/w
> > > > commands.
> > > > 
> > > 
> > > Hmm, so the main portion of the driver needs to
> count the number of
> > > active users across rfkill interfaces 
> before powering down the chip. I
> > > do not quite understand what the issue is
> here...
> > 
> > He also wants to (ab)use rfkill to signal to userspace
> what the value of
> > that counter is ...
> > 
> 
> Well, this one is easy - just say 'No' ;)
> 
> -- 
> Dmitry
> 


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/